Finding the Fourth Proportional to 388,339,974.70, 582,509,962.05 and 101,125,638.70
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Solution
The fourth proportional to 388,339,974.70, 582,509,962.05 and 101,125,638.70 is: 151,688,458.05
Step by Step Solution
- Step 1: Write the proportion equation
388,339,974.70 : 582,509,962.05 = 101,125,638.70 : x - Step 2: Convert to fraction form
388,339,974.70/582,509,962.05 = 101,125,638.70/x - Step 3: Cross multiply
388,339,974.70x = 582,509,962.05 × 101,125,638.70 - Step 4: Simplify right side
388,339,974.70x = 58,906,691,961,419,008 - Step 5: Solve for x
x = 58,906,691,961,419,008/388,339,974.70 - Step 6: Final answer
x = 151,688,458.05
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.